Machine for feeding mixed stock



SGP@ 22, l93- c. G. SRGENT ET AL 1,823,955

MACHINE FOR FEEDING MIXED STOCK Filed Dec. 10, 1926 3 Sheets-Sheet Q Sept. 22, 1931. c. G. sARGl-:NT ET AL.

MACHINE .FOR FEEDING MIXED STOCK Filed Dec. lO, 1926 3 Sheets-Sheet 2 F'y www Sept. 22, 1931. c. G. SARGENT ET Al. 1,323,955

MACHINE FOR FEEDINCT MIXED STOCK Filed Dec. 10, 1926 3 Sheets-shewv 5 few/THM Patented Sept. 22, 1931 Unirse .STATES f PTENT- OFFICE CHARLES G. sanenN'r'AND 'FRANK irnni'snsri, or GRANITEVLLE, MAssiicirnsn'r'rs,l

`ASSIGNORS TO C. G. SARGENTS SONS CORPORATION, CFl GRANITEVILLE, MASSA'- cHUsETTs, A conroiaii'rioivor 'MASSACHUSETTS MACHINE FOR. FEEDING MIXED' STOCK Application med December 10.1926. serial No. 153,953.

This invention relates to a press roll inachiiie for `expressing the moisture from a substance of mixed solid and liquid character such as comminuted rubber to be reworked and some other fibrous materials. The principal objects of the invention are to provide means for taking the solid inatample a pair of press rolls, and to provide these means in the saine machine without materially adding to the expense thereof Gtlier objects and advantages of the invention will appear hereinafter. i

Reference is to be had to the accompanying drawings in which Fig. 1 is a side view of a press roll niav y spring 2O at the end of each crank rod chine with the front wall removed to show features of this invention;

Fig. 2 isV an outside view of a crank rod and means for moving it;

Fig. 3 is an enlarged sectional view of.

Fig. 2;

Fig. t is a pla-n of the machine; and A VFig. 5 is a side View of a modiiication partly in section.

rEhe invention is shown in Figs. 1, 25 .35v

and f1 as applied to a wellknown type of machine for extracting liquid from'a mixture of materials. In this machine, a feed hopper 1() is provided having therein a feed apron 11 and the usual means for*y In this case we have operating the same. placed a partition 12 just below the feeding strand of the apron, or back of it, to exclude the material fed in from the space behind and another partition 13 in front of the feed apron. for a similar purpose.` Thisv f partition 13 is ina-de adjustable at `the top.

The material fedv in front of it, ofcourse, can descend below the point where it will be picked up by the feed apron and fed up wardly in the usual way. In order .toV pre- Vvent too much of the stock getting down behind vthe feed apron, where it is in the" way and accomplishes no useful result, the partition l2 is provided and also the partition` 13. The adjustment vof the latter will p regulate the height of material behind it.

Stock fed over the top of the apron drops"y on an inclined wall 14 and down to a reciprocating plate 15l at the bottom. This wall 14 is close enough tothe plate to prevent material passing baekwardly over the plate. `T he plate is reciprocated to push thel I material forwardL and over a stationary perforated plate 16 into any desired position, for exampleA between the press rolls 17. Liquorcan drain down through the perforated plate with theliq-uor coming down l' the rearside of thebottoin roll 17 `that is f extracted by the pressure. n y

e* The plate 15 is `reciprocated by cranks 18 operated by the machinery of the` press in any usual way.) nected with rods'19to the .plate 15. The connection is made `through a compression which bears against a head 21 fixed on the rod and is Alocated in a socket pivoted to the plate'l. A s

The normal operation is the same as usual yield andinstead of breaking the connect- Vving rods or other, pieces, the machine will 4continue to operate until stopped. No undue pressure vis encountered at this point there fore. v .i i The droppings from the lower press roll i 17 do notconsist of purevwate'r or liquor but contain a considerable proportion of rubber and fibrous or other solidV material. Under previous practice this material, which is very i-"aliiableY in the mixture, is lost. For the pur- I pose of saving it7 we place below the pressure rolls 17 a-means for catching the droppings and moving them back into the feed hopper where they will be. picked yup v and fed through again. Inthe form shown in these figures. this meansconsists of anendless Aconveyor 25 movable in the .directionindi- ,ca-ted by the Aarrows in a trough having a Y pair sides andan inclined bottom. About The cranks 18 ai'e conat one side of the machine.

mid-way of the bottom there is a perforated screen 27 to catch all thel droppings. The conveyor consists of two chains ruiming over sprocket wheels 28 with angle iron floats 29 riveted to the chains. y On each angle iron float there-is a Vpiece ofv rubber 30 Vriveted tlieretoto scrape the material backintothe feed hopper 10. The inclined bottom constitutes a ditch for receivingthe liquor and is" made up of ascreen which'V allows the liquid drainings to pass down below into an in-Y clined trough 31 which will bring them out The more solid 'parts areV brought into the hopperthrough an opening in the side and deposited under the endless feed apronwhereithey are taken back to pass through again. l l

In this way Ythe-liner particles of rubber, wool' or other rmaterial are saved and fed through Athe machine again if they ldrop down from the extraction rolls. Furthen more,`the parts that cooperate with the reciprocating plate are in no danger of being 'broken by the presence of iron or other hard '-s-Libst-ancesin 'the stock.

Aside from thematters described herein, the machine is made in accordance with any old type of machine for this purpose. The `device' can be used in pushing the stock into a `,pair of feed rolls such as `are used on pickers and openers in textile mills instead -of constituting a partl `of a machine .as described above. 1 1

Other modifications can' be made and one of them' is shown in Fig. 5. In this case` the material is fed-from the hopper l0 to the extraction rolls A17 and treated in substantially thesameway as above described by a single perforated apron or conveyor. This conveyor has a strand 3.5 inclinedupwardly `for feeding the stock inthe same way as the feeding apron in Figi. l` The return strand comes downwardly and then'pa-sses out under the feed rolls `to constitute astrand 36 which inay'extend horizontally 'and take the droppings from the feed 'rolls downto the perfodroppings therefrom, said conveyor comprising an apron having transverse floats thereon, a'perforated trough located under the return lower strand of the apron in position to have the lioats thereof come substantial-ly into Contact with it, the trough delivering back into the feed hopper, andk a trough underneath ythe perforated trough and inclined in a direction for directing the liquid away Afrom theV hopper.

2. In a feeding hopper, the combination with an inclined feed apron, of a partition parallel thereto located within the hopper, and means forazfeeding stock backwardly `into the hopperbelowthe apron and partition. y f

in vvtestimony whereof we have hereunto ai'liXed our signatures.

" CHAS. G. SARGENT.

' j FRANK L. FURBUSH.

rated bottom 27 as in Fig. l. The lower strand 36v talesthe stock Yback into the hopper asfdescribed above. The discharge of the solid and liquid p parts is the same as in -the other form shown. V

Although we have illustrated and dey scribed only two 'forms of the invention we'V vare aware of the fact that Aother modifications can be made therein by" any personV skilled in the art without departing 'from theV scope of the invention as expressed' in the claims. There-fore, we do'notwish to be flifniited to all the details of vconstruction herein shown and described but what we do claim is: Y l. The combination of a feed hopper with -a pair of rolls in position for receiving stock therefrom, a horizontal endless conveyor located underneath the rolls to receive the HIJO ries' 

